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Suborder Senticaudata

jumping crustacean thing found under some soggy leaves on a redwood deck.   - Arcitalitrus sylvaticus Arlo Pelegrin, This one is for you! - Arcitalitrus sylvaticus Unknown Amphipod from San Francisco, CA - Arcitalitrus sylvaticus Amphipod - Americorchestia longicornis Amphipod - Crangonyx Megalorchestia - Megalorchestia californiana Caprella californica Caprella - Caprella mutica - female
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Crustacea (Crustaceans)
Class Malacostraca (Malacostracans)
Superorder Peracarida (Marsupial Crustaceans)
Order Amphipoda (Amphipods)
Suborder Senticaudata
Explanation of Names
Senticaudata Lowry & Myers, 2013
Numbers
5000 species worldwide
Identification
Strong apical setae on the 1st and 2nd uropods(1)
Range
Worldwide, ubiquitous in marine freshwater, and coastal environments, with terrestrial species in some areas
Remarks
The suborder was split from Gammaridea, traditionally the main amphipod suborder, by Lowry & Myers in 2013.(2)
Works Cited
1.A Phylogeny and Classification of the Senticaudata, subord. nov.
Lowry J.K. & Myers A.A. 2013. Zootaxa 3610(1): 001-080.
2.Wikipedia